Calendar.



` No2 709,353. Patented Sept.` I6, |902.

W. C. NORMAN.

CALENDAR.

` (Applienion med Fab. 2e, moa.)

(Nq Model.)

/4 I NHH-illllll l v g UNITED STATES PATENT FFICE.

` `WILLIAM c. NORMAN, or sMrrnToN, ARKANSAS.

CALENDAR.

, SPECIFICATION forming' part of Letters Patent No. l709,353, dated September 16, 1902.

impresion nea February 26,1902. sentira. 95,754. (Nomads To aZZfwwm/ it may concern:

Beit known that I, WILLIAM C. NORMAN, a

` citizen of the United States, residing at Smithton, in the county of Clark `and State of Arkansas, have invented certain new and useful Improvements injPerpetual Calendars, of which the following is a specification.

My invention is a calendar; and itconsists K i `oftbree disks-one outside disk, one central disk, and one intermediate diskarranged t y with letters andnumerals, so as to give peri .afaceviewof myinvention.

petually the days of the week and month.

In the accompanying drawings, Figure 1 is Fig. 2 is a crosssectional view of Fig. 1 on the line X `X. Fig. l3 isa detailed View showing the construction `of the nut and the manner in which the bolt is kept from coming out of the nur. Fig. 4 is substantially a repetition of Fig. 3, the bolt being elevated above the female thread of the nut. Fig. irepresents another means of uniting the three disks, in which case the `nut is a -mere extension vfrom the back wall of the outside disk. y y y It is primarily intended that this calendar be manufactured of aluminium and be about `the size of a silver dollar; butit may be manufactured of any suitable material and may be any size. i

i My invention is described as follows:

lrepresents the rim of the outside disk; 2,

the rim of 'the intermediate disk, and 3 the central disk.` The outside diskhas its center cut away, forming a circular` depression 4, however leaving `a back The intermediate disk tits inthe depression 4 of the outer disk and has in its center a double recess 6 and 6',4 leaving aithinback 7. `The central disk?) `fits in the recess 6' and has a` thin iia'nge S, that tits in the recess 6. Each one of these disks basa concentric opening 9.-

.\(See Fig. 1.)

On the outer rim landfront face of the outside disk are abbreviatednames 10 of the days'of the`week,and on the outer rim 2 and front face of` the intermediate disk are the abbreviated namesll of lthe months of the year.

The face of thecentralfdiskis divided into ence. (See Fig. 2.) The letters and figures 'may be raised by being stamped up on the` facesof these disks or they may be applied to the same in any other way, provided they may be plainly and easily read.

The back side of the calendar is perfectly level and smooth and is used for advertising purposes.

The three disks are held together by a nut 13, passing throughthe center of them. The nut 13 has its lower endcountersuuk in the back 5 of the outside disk, and the front face of the center disk 3 has a depression in which is countersunk the upper end of a threaded bolt`14. The nut 13 has afemale thread 15, and at the bottom of this female thread a smooth enlargement 16, the lower wall 17 of which is convex.

The bolt`14 is made of malleable material and has .extending from its lower end two points 18. The said bolt 14 is screwed down into the female thread 15 of the nut 13, and when the points 1S strike the convex wall 17 they are bent out, and thus the bolt 14 cannot come out unless considerable pressure is brought to bear to unscrew it.` The purpose of this arrangement is to keep the bolt 14 from coming out, and thereby keep the three sections of the calendar from coming apart.

When I wish to set the calendar, I insert a knife-blade or a'screW-driver into the slit 19 "of the bolt .14, and give it a halt-turn. This loosens the bolt so that I can set the calendar, and when set I turn the bolt in again .until it is tight. However, for cheaper calendars I can unite the, three parts by a simple nut countersunk at both ends, or I may make the outside disk with a central elevation 20, which will answer for a nut, and instead of having it centrally threaded I may brad the upper end of it down, and thus hold the three parts of the calendar together.

To operate the calendar, (we Will begin on the rst day of January, for the year 1902, to illustrate) turn the calendar until Sunday is up, and as January, 1902, begins on Wednesday, we will turn the second disk until January is opposite Wednesday, and` as January comes on Vednesday, we will read the daysof the month beginning at the numeral l, and reading to the rightfor instance, 1 represents Wednesday,

TOO

January, the first; 2, the second; 3, the third; 4, the fourth; 5, t-he fifth; 6, the sixth; 7, the seventh, and then we read up to 8, which lis. Wednesday, January the eighth, and so on around until the month is completed; and then, as February begins on Saturday, wetu'rn the second disk until February is under Saturday, and then We turn the center disk until l is under February, and then, beginning at 1, We read: Saturday, February, the rst; Sunday, the second; Monday, the third; Tuesday, the fourth; Wednesday, the fth; Thursday, the sixth; Friday, the seventh, and Saturday, the eighth, and-so on around until the monthlis completed, and we cornlplllete this operation every mout-h perpetua y.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is- I 1. A perpetual calendar, consisting of three disks, the outside disk having a central depression, leaving an outer rim, and on said outer rim the days of the week,4 indicated equal distances apart; in said central depression journaled a second disk, havinga double depression, leaving an outer rim 2, and on v this outer rim the names of the months of the year, and in the double depression of the second disk journaled a thirdA disk, having a iiange that works in the first step of .the double depression just mentioned; said disk having radial lines extending from its center, leaving between them equal spaces, and in these spaces, numerals so arranged that by turning the second and third disks, the days of the Week and the month may be read'perpetually; said disks each having in its center the year, and in the double depression of the second disk, journaled. a third disk, having a `fange that yWorks in the first step of the double depression just mentioned; said disk having radial lines extending from its center, leaving between them equal spaces, andy in these spaces, numerals so arranged that by turning the second and third disks, the days of the week and the month may be read perpetually; said disks each having in its centerv a perforation; a nut passing from the rear through said perforations, and having in its front end a female thread, and at the base of said female thread an enlargement, the bottom wall of which is convex; a bolt having at its threaded end,'two projections which pass into the said enlargement, and are bent out when said screw is turned home, substantially as shown and described and for thepurposes set forth.

In testimony whereof I aiix my signature inpresence oftwowitnesses.

WILLIAM C. NORMAN.

Witnesses: j

NORMAN SMITH, A. W. GRIZZLE. 

